Ignition magneto mechanism for air-started internal-combustion engines.



U. E. SARGENT IGNITION MAGNETO MECHANISM FOR AIR STARTEE' MG-LL COMBUSTION ENGINES.

Pam'nteci June 14;, 191G,

, eff I I i- M $2502 (2% .q/

O.E.SARGENT.

IGNITION MAGNETO MECHANISM FORAIR STARTED INTERNAL COMBUSTION ENGINES.

APPLICATION FILED JULY 18, 1908. I gxfi g ggrggg v Patented June 14,1910.

2 sums-SHEE 2 through a pipe invention can nnrrisn snares ATENT eerie.

LES nfssnnsnn'r; or mamas,

WISCONSIN, ASSIGNOB. TO- WISCONSIN ENGINE COMPANY, OF GOBLISSQWISCONSIN, A CORPORATION OF WISCQNSIN.

IGNITION MAGNETQ MECHANISIH F AIR-STARTED INTERNAL-CQMBUSTION ENGINES.

Specification of Letters Eatent.

Patented June 1%, 18M.

Application filed July 18, 1908. Serial No. 4%,181.

T0 it may; concern:

Be it known that I, CHARLES E. Sanonn'r, a citizen of, the United States, residing at Corliss, in the county of Racine and State of Wisconsin. p, ful Improrenient in Ignition Magneto Mechanism for Air-Started Internal-Combustion Engineanf which the following is a specification.

My invention relates to certain new and useful improvements in ignition magnetomechanism for air-started internal-combustion engines, and is fully described and explained in the accompanying drawing, in which:

Figure 1 is an elevation of the ignitionniagneto mechanism proper; Fig. 2 is a section in the line 2 of Fig. 1; Fig. 3 is a section in the line 3 of Fig. 2; Fig. 4 is a side elevation pf an engine s iowing the ignitionmagneto mechanism in place thereon, an

the general arrangement of cooperating parts; and Fig. 5 is an end'view of the engine and ignition-magneto mechanism, the elevation being one of the left-hand end cf the parts shown in Fig. 4:.

Referring to the drawings, and more particularly in the first instance to Figs. 4 and 5; l, 1, are the cylinders of a gas engine which is provided with a flywheel 2, a eountershaft 3 and suitable valve-mechanism. ilheengine here illustrated is of course only one of many types to which my tra ted is that shown in my Patent No. 785,985. inasmuch as the details of the construction of the engine form no part of the present invention, a description thereof will not be necessary at this time. In the base of the engine is a reservoir 4 for compressed air into which air can be pumpedby means of a pump 5, operated by a cam on the countershaft 3. This reservoir for com; pressed air is adapted for use in starting the engine and for that purpose is led, out 6 controlled by a valve 7 to the valve mechanisrn. The valve-mechanism is of such form thatthrough it compressed air can he led to the cylinders or a cylinder for starting purposes, the particular form of mechanism here illustrated being that shown in the patent above referred to,

' uisite current be applied and the form illus- .belt D to some part rota I can rotate freely at a the left hand end of the thrown into action by 7 the valves operating as the valves of a compressed air-engine when the valve 7 is at one position, and as the valves of a fourcycl'e gas-engine when the hand-lever is in another position. It will be obvious, however, that as far as the resent invention'isconcerned, the particu valve-mechanism is wholly immaterial, the essential merely gas-engine of the type the action of compressed air in its cylinders or in a cylinder, and that there hall be in addition a supply of compressed air for such starting purposes, and means for controlling the act-ion of such compressed air.

Referring now to Figs.,1, 2 and 3, the main-shaft of the magneto which in its details of" construction may be of any desiredform suitable for producing the reqfor the desired spark. On the shaft A is mounted an impact-bucket wheel B rigid with the shaft and adapted by its rotation to turn the shaft in thedirection illustrated by the arrow in Fig. 1. C is the nozzle adapted to direct a current of compressed air against the buckets of the wheel B in such direction as to producethe requisite rotation thereof, The nozzle G connected with the pipe 6 so that when the valve is opened to start the engine, comressed air will issue from the nozzle U striking the buckets of the wheel B and setting the shaft of the magneto in motion. Inasmuch as, the ma light, it will reach a igh speed 'of rotation very quickly and willbe capable of sup lying the requisite spark to run the engine efore the engine has reached sufiicient velocity to run on gas. The wheel B is provided with a projecting boss B upon a loose pulley D connected by means of a by the engine. A clutch connection is provided between the pulley D and the bucket wheel B3 of such construction drive the magneto while the bucket-wheel reater speed than the interrerence. In the particular form of mechanism which i; prefer, the Elutch provided is of the-type shewn in Fig. 3, the pulley. being: provided'with tapering depressions d in which runroilers d When the pulley is running faster than pulley without means of a hand valve etc is comparatively which is mounted Ais- that-when the pulley rotates faster than the bucket-wheelthe pulley will lies the bucket-wheel, the rollers will run to the small ends of the depressions and bind the 4 two parts together, while when the bucketpressions and permit relative rotation; I am intend therefore,

wheel is rotating faster than the pulley, the rollers will run to the large ends of the deaware that th1s is a 'common'form of clutch mechanism and itis quite obvious that any 7 other form accomplishing the same results might be readily substituted for the .one here i shown.

The operation of the device will now be readily apparent. As soon as the engine has reached its normal speed, after the air is turned on in the way already set forth, or after the engine begins to run-on gas and the air is shut off, the speed of the bucket-- wheel will fall below the speed of the. pulley which is driven by the engine, and thereafter the engine will drive the magneto in the usual Way. i

The device shown and described is particularly advantageous because it enables the magneto to get in'ra'pid and almost instantaneous 0 eration so as to provide the requisite spar at the earliest possible moment when it can be required bythe needs of the engine, and immediately upon the cutting off of the starting air, the magneto will be picked up by the engine and driven in the usual manner. The device is f rther advantageous because the magneto i automatically set in operation ,at high speed upon the movement of the main valve necessary to start the engine, and the starting power for the magneto is automatically cut oil when the starting air supply is out off.-

I realize that considerable variation is possible in the details of construction of my improved device, without departing from the spirit of. my invention, and I do not to limit myself to the specific form herein shown and described.

WVhat I claim as new and desire to secure by Letters Patent, is'

l. The combination with an air-started internal-combustion engine and an i itiongenerator therefor, sald generator avin Q n b a movable art, of means for driving the generator rom the engine, means for supplying compressed air, means connected "to said supply for driving the generator by compressed air, means also connected to said supply for starting the engine by compressed air, and asingle means for controlling the supply of air to the engine and the generator driving means.

' 2. The combination with an internalcombustion engine and an i nition-generator therefor, said generator having a movable art, of means for driving-the generator rom the engine, a connection between the driving means and the generator to per- 'for driving the engine by compressed air, a

single means for controlling the supply of air to the engine and the generator driving means and means for causing the engine operated driving means of the generator to drive the generator when the engine has attained its speed,

part of the genera- I 4; The 'combination with the ignition-generator of an internal-combustion engine of the type started with compressed a1r, said generator having an armature shaft, of an lmpact bucket-wheel fast on the armature shaft thereof, a loose pulley having a clutching means for permitting-the armature to run faster than the loose pulley but not slower, an air-nozzle directed toward the buckets of the bucket-wheel, means for 'connection' between the'loose pulley and'the engine, and a pipe connecting the air-nozzle to the compressed air supply.

5. The combination with the ignition-generator of an internal-combustion engine of the t e started with com ressed air said yP P 7 generator having an armature shaft, of an .lmpact bucket-wheel on the shaft thereof, a .loose pulley having a clutching means for permitting the armature to run faster than the loose pulley but not slower, an air-nozzle directed toward the buckets of the bucketwheel, means for connection between the loose pulley and the engine, and a pipe c0nnecting the air-nozzle to the compressed air supply between the [engine and the valve which turns it on to start the engine.

6. The combination with an internal-combustion en inc and an ignition-generator therefor, o a single source of compressed air, air actuated means for operating the ignition-generator, and connection between A the source of compressed air and the engine adapted to start the latter, and between the source of compressed air and the driving mechanism for the ignition-generator, and connections between the engine and ignitiongenerator whereby the engine may drive the ignition-generator.

' CHARLES E. SARGENT. In presence of K. M. CORNWALL, 'R. A. SonAErER. 

